!!! 除了IE的ActiveX项目，不推荐ATL !!!
!!! ATL is not recommended except for IE ActiveX projects. !!!

Use Visual Studio’s wizard to create COM

Visual Studio 2013 ~ 2019

x86 IDE

Visual Studio 2022

x64 IDE

step by step:

建立ATL工程
建立ATL Simple Object
添加IDL方法
测试添加的method

建立ATL工程

File->New->Project

name: testATL

Note: name即是要生成的DLL文件
project type project name

选择"MFC/ATL"中"ATL Project":

Default

project property

Choice Platform

Build -> Configuration Manager

x64 or x86

取消编译时注册Dll

Project -> Properties

Linker -> Register Output
No

x64 for vs2022+

Linker -> All Options -> 
Register Output: No

Add ATL Simple Object

右击项目名称

vs2013/vs2015:
Add -> Class

vs2017/vs2019:
Add -> New Item

vs2022:
Add -> Module

ATL Simple Object:

atl simple object - new

设置

Short name: testSOW

Simple Object ID
ProgID: testATL.testSOW

atl simple object - progID

IE支持

vs2013/vs2015
Options -> Support
vs2017/vs2019/vs2022
Other Options

atl simple object - Support

添加IDL方法

Tab switching from “Solution Explorer” to “Class View”

vs2022: View -> Class View

Select the interface, Right-click -> add -> add method

name: ItestSOW

atl interface - add 添加方法名称以及参数

atl interface - property

MIDL attribute

in
retval testATL.idl(part):

	[id(1), helpstring("add method")] HRESULT Add([in] LONG x, [in] LONG y, [out, retval] LONG* ret);
	[id(2), helpstring("sub method")] HRESULT Sub([in] LONG x, [in] LONG y, [out, retval] LONG* ret);

test

注册COM

@echo
cd /d %~dp0
Regsvr32 xbfInfo.dll

Debug版本
拷贝

C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Redist\MSVC\14.42.34433\x86\Microsoft.VC143.CRT\vcruntime140d.dll

and

C:\Windows\SysWOW64\ucrtbased.dll

放到testATL.dll所在的目录

VB Project

Project -> Add Reference vb import dll

按钮事件：

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim obj As New testATLLib.testSOW
        Dim int1 As Long

        'vs2010/vs2013'int1 = obj.Add(2, 3)
        obj.Add(2, 3, int1)
        Label1.Text = int1
    End Sub

拷贝Interop.testATLLib.dll和WindowsApplication1.exe即可

Issues

Q: Vs 2012+

System.Runtime.InteropServices.COMException (0x80040154): 
Retrieving the COM class factory for component with CLSID 
{7A6E7413-F0E2-41B8-9BB7-036229C90FE5} failed due to the following 
error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

A: vs高版本已经使用32/64位
It means the class id 877AA945-1CB2-411C-ACD7-C70B1F9E2E32 is not in the registry.

You can verify this by opening regedit.exe, browsing to HKEY_CLASSES_ROOT\CLSID{877AA945-1CB2-411C-ACD7-C70B1F9E2E32}.
If your running a 32-bit app on a 64 bit OS, look for HKEY_CLASSES_ROOT\Wow6432Node\CLSID{877AA945-1CB2-411C-ACD7-C70B1F9E2E32}

If it is there, it may be some other issue but it is probably missing.
To resolve this you will usually run the installer that distributes this COM object.
If you don’t have one and you know what dll implements the object, you can run regsvr32.exe (or regasm.exe for a managed dll).

ucrt

仅安装ucrt（通用Windows sdk）会出现：

  cannot find the resource compiler dll. please make sure the path is correct.

解决办法：
安装Windows 8.1/Windows 10 SDK

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